Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.135881][ T8665] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 67.204230][ T8694] ================================================================== [ 67.213324][ T8694] BUG: KASAN: slab-out-of-bounds in css_task_iter_advance+0x50e/0x540 [ 67.221693][ T8694] Read of size 8 at addr ffff8880860c9208 by task syz-executor906/8694 [ 67.230083][ T8694] [ 67.232431][ T8694] CPU: 1 PID: 8694 Comm: syz-executor906 Not tainted 5.2.0-rc3-next-20190607 #11 [ 67.242346][ T8694] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.252580][ T8694] Call Trace: [ 67.255893][ T8694] dump_stack+0x172/0x1f0 [ 67.260326][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 67.265867][ T8694] print_address_description.cold+0xd4/0x306 [ 67.272104][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 67.277588][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 67.283059][ T8694] __kasan_report.cold+0x1b/0x36 [ 67.287995][ T8694] ? __sanitizer_cov_trace_cmp8+0x20/0x20 [ 67.293822][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 67.299293][ T8694] kasan_report+0x12/0x20 [ 67.303749][ T8694] __asan_report_load8_noabort+0x14/0x20 [ 67.309698][ T8694] css_task_iter_advance+0x50e/0x540 [ 67.315191][ T8694] css_task_iter_start+0x18b/0x230 [ 67.320314][ T8694] __cgroup_procs_start.isra.0+0x32f/0x400 [ 67.326285][ T8694] cgroup_procs_start+0x1e7/0x260 [ 67.331313][ T8694] cgroup_seqfile_start+0xa4/0xd0 [ 67.336448][ T8694] ? cgroup_file_release+0xb0/0xb0 [ 67.341563][ T8694] kernfs_seq_start+0xdc/0x190 [ 67.346336][ T8694] ? kvmalloc_node+0x70/0x100 [ 67.351021][ T8694] seq_read+0x2a7/0x1110 [ 67.355299][ T8694] kernfs_fop_read+0xed/0x560 [ 67.360148][ T8694] ? rw_verify_area+0x126/0x360 [ 67.365021][ T8694] do_iter_read+0x4a4/0x660 [ 67.369665][ T8694] ? dup_iter+0x260/0x260 [ 67.374026][ T8694] vfs_readv+0xf0/0x160 [ 67.378379][ T8694] ? alloc_pages_current+0x10f/0x210 [ 67.383668][ T8694] ? compat_rw_copy_check_uvector+0x4c0/0x4c0 [ 67.389876][ T8694] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.396125][ T8694] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.402406][ T8694] ? iov_iter_revert+0xaa0/0xaa0 [ 67.407666][ T8694] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 67.413401][ T8694] ? iov_iter_pipe+0xba/0x2f0 [ 67.418126][ T8694] default_file_splice_read+0x475/0x890 [ 67.423674][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.430010][ T8694] ? iter_file_splice_write+0xbd0/0xbd0 [ 67.435566][ T8694] ? aa_path_link+0x460/0x460 [ 67.440268][ T8694] ? find_held_lock+0x35/0x130 [ 67.445094][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.451424][ T8694] ? fsnotify_nameremove+0x300/0x300 [ 67.456767][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.463009][ T8694] ? fsnotify_first_mark+0x210/0x210 [ 67.468306][ T8694] ? security_file_permission+0x8f/0x380 [ 67.473941][ T8694] ? __mutex_init+0xef/0x130 [ 67.478542][ T8694] ? iter_file_splice_write+0xbd0/0xbd0 [ 67.484173][ T8694] do_splice_to+0x127/0x180 [ 67.488683][ T8694] splice_direct_to_actor+0x2d2/0x970 [ 67.494164][ T8694] ? generic_pipe_buf_nosteal+0x10/0x10 [ 67.499893][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.506216][ T8694] ? do_splice_to+0x180/0x180 [ 67.510986][ T8694] ? rw_verify_area+0x126/0x360 [ 67.515927][ T8694] do_splice_direct+0x1da/0x2a0 [ 67.520784][ T8694] ? splice_direct_to_actor+0x970/0x970 [ 67.526336][ T8694] ? rcu_read_lock_sched_held+0x110/0x130 [ 67.532175][ T8694] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 67.537629][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.543868][ T8694] ? __sb_start_write+0x1ac/0x360 [ 67.548951][ T8694] do_sendfile+0x597/0xd00 [ 67.553479][ T8694] ? do_compat_pwritev64+0x1c0/0x1c0 [ 67.558870][ T8694] ? putname+0xf4/0x130 [ 67.563111][ T8694] ? do_sys_open+0x31d/0x5d0 [ 67.567838][ T8694] __x64_sys_sendfile64+0x1dd/0x220 [ 67.573133][ T8694] ? __ia32_sys_sendfile+0x230/0x230 [ 67.578919][ T8694] ? do_syscall_64+0x26/0x680 [ 67.583690][ T8694] ? lockdep_hardirqs_on+0x418/0x5d0 [ 67.589257][ T8694] ? trace_hardirqs_on+0x67/0x220 [ 67.594307][ T8694] do_syscall_64+0xfd/0x680 [ 67.598820][ T8694] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.604797][ T8694] RIP: 0033:0x442409 [ 67.608687][ T8694] Code: e8 8c b2 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 67.628569][ T8694] RSP: 002b:00007ffd293a8008 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 67.637116][ T8694] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442409 [ 67.645090][ T8694] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008 [ 67.653166][ T8694] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 67.661235][ T8694] R10: 0000000000000002 R11: 0000000000000246 R12: 000000000000001c [ 67.669538][ T8694] R13: 0000000000403210 R14: 0000000000000000 R15: 0000000000000000 [ 67.677607][ T8694] [ 67.680151][ T8694] Allocated by task 8692: [ 67.684493][ T8694] save_stack+0x23/0x90 [ 67.688947][ T8694] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 67.694585][ T8694] kasan_kmalloc+0x9/0x10 [ 67.698971][ T8694] kmem_cache_alloc_trace+0x151/0x750 [ 67.704364][ T8694] find_css_set+0x742/0x18b0 [ 67.709132][ T8694] cgroup_migrate_prepare_dst+0x104/0x780 [ 67.715134][ T8694] cgroup_update_dfl_csses+0x331/0x5a0 [ 67.720584][ T8694] cgroup_apply_control+0x3e/0x50 [ 67.725674][ T8694] cgroup_subtree_control_write+0x7f5/0xbd0 [ 67.731573][ T8694] cgroup_file_write+0x241/0x790 [ 67.736595][ T8694] kernfs_fop_write+0x2b8/0x480 [ 67.741535][ T8694] __vfs_write+0x8a/0x110 [ 67.745959][ T8694] vfs_write+0x268/0x5d0 [ 67.750514][ T8694] ksys_write+0x14f/0x290 [ 67.754934][ T8694] __x64_sys_write+0x73/0xb0 [ 67.759550][ T8694] do_syscall_64+0xfd/0x680 [ 67.764051][ T8694] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.769941][ T8694] [ 67.772261][ T8694] Freed by task 8201: [ 67.776255][ T8694] save_stack+0x23/0x90 [ 67.780413][ T8694] __kasan_slab_free+0x102/0x150 [ 67.785351][ T8694] kasan_slab_free+0xe/0x10 [ 67.789847][ T8694] kfree+0x106/0x2a0 [ 67.793872][ T8694] tomoyo_supervisor+0x360/0xef0 [ 67.798847][ T8694] tomoyo_env_perm+0x18e/0x210 [ 67.803602][ T8694] tomoyo_find_next_domain+0x1354/0x1f6c [ 67.809249][ T8694] tomoyo_bprm_check_security+0x124/0x1b0 [ 67.815045][ T8694] security_bprm_check+0x63/0xb0 [ 67.820230][ T8694] search_binary_handler+0x71/0x570 [ 67.825420][ T8694] __do_execve_file.isra.0+0x1310/0x22f0 [ 67.831089][ T8694] __x64_sys_execve+0x8f/0xc0 [ 67.835834][ T8694] do_syscall_64+0xfd/0x680 [ 67.840514][ T8694] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.846653][ T8694] [ 67.848985][ T8694] The buggy address belongs to the object at ffff8880860c8dc0 [ 67.848985][ T8694] which belongs to the cache kmalloc-1k of size 1024 [ 67.863035][ T8694] The buggy address is located 72 bytes to the right of [ 67.863035][ T8694] 1024-byte region [ffff8880860c8dc0, ffff8880860c91c0) [ 67.876843][ T8694] The buggy address belongs to the page: [ 67.882472][ T8694] page:ffffea0002183200 refcount:1 mapcount:0 mapping:ffff8880aa400ac0 index:0x0 compound_mapcount: 0 [ 67.893827][ T8694] flags: 0x1fffc0000010200(slab|head) [ 67.899213][ T8694] raw: 01fffc0000010200 ffffea0002869d08 ffffea00022ed608 ffff8880aa400ac0 [ 67.908121][ T8694] raw: 0000000000000000 ffff8880860c8040 0000000100000007 0000000000000000 [ 67.916958][ T8694] page dumped because: kasan: bad access detected [ 67.923443][ T8694] [ 67.925831][ T8694] Memory state around the buggy address: [ 67.931690][ T8694] ffff8880860c9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 67.939765][ T8694] ffff8880860c9180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 67.947832][ T8694] >ffff8880860c9200: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 67.955884][ T8694] ^ [ 67.960210][ T8694] ffff8880860c9280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 67.968273][ T8694] ffff8880860c9300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 67.976932][ T8694] ================================================================== [ 67.985070][ T8694] Disabling lock debugging due to kernel taint [ 67.991218][ T8694] Kernel panic - not syncing: panic_on_warn set ... [ 67.997862][ T8694] CPU: 1 PID: 8694 Comm: syz-executor906 Tainted: G B 5.2.0-rc3-next-20190607 #11 [ 68.008361][ T8694] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.018796][ T8694] Call Trace: [ 68.022119][ T8694] dump_stack+0x172/0x1f0 [ 68.026457][ T8694] panic+0x2cb/0x744 [ 68.030360][ T8694] ? __warn_printk+0xf3/0xf3 [ 68.035066][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 68.040526][ T8694] ? trace_hardirqs_off+0x62/0x220 [ 68.045776][ T8694] ? trace_hardirqs_off+0x59/0x220 [ 68.050909][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 68.056549][ T8694] end_report+0x47/0x4f [ 68.060703][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 68.066158][ T8694] __kasan_report.cold+0xe/0x36 [ 68.071109][ T8694] ? __sanitizer_cov_trace_cmp8+0x20/0x20 [ 68.076973][ T8694] ? css_task_iter_advance+0x50e/0x540 [ 68.082430][ T8694] kasan_report+0x12/0x20 [ 68.086756][ T8694] __asan_report_load8_noabort+0x14/0x20 [ 68.092397][ T8694] css_task_iter_advance+0x50e/0x540 [ 68.097837][ T8694] css_task_iter_start+0x18b/0x230 [ 68.103099][ T8694] __cgroup_procs_start.isra.0+0x32f/0x400 [ 68.108919][ T8694] cgroup_procs_start+0x1e7/0x260 [ 68.114014][ T8694] cgroup_seqfile_start+0xa4/0xd0 [ 68.119025][ T8694] ? cgroup_file_release+0xb0/0xb0 [ 68.124139][ T8694] kernfs_seq_start+0xdc/0x190 [ 68.128909][ T8694] ? kvmalloc_node+0x70/0x100 [ 68.133591][ T8694] seq_read+0x2a7/0x1110 [ 68.137861][ T8694] kernfs_fop_read+0xed/0x560 [ 68.142531][ T8694] ? rw_verify_area+0x126/0x360 [ 68.147393][ T8694] do_iter_read+0x4a4/0x660 [ 68.151956][ T8694] ? dup_iter+0x260/0x260 [ 68.156286][ T8694] vfs_readv+0xf0/0x160 [ 68.160581][ T8694] ? alloc_pages_current+0x10f/0x210 [ 68.165872][ T8694] ? compat_rw_copy_check_uvector+0x4c0/0x4c0 [ 68.172198][ T8694] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 68.178661][ T8694] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 68.184999][ T8694] ? iov_iter_revert+0xaa0/0xaa0 [ 68.189982][ T8694] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 68.195695][ T8694] ? iov_iter_pipe+0xba/0x2f0 [ 68.200372][ T8694] default_file_splice_read+0x475/0x890 [ 68.205916][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.212262][ T8694] ? iter_file_splice_write+0xbd0/0xbd0 [ 68.217876][ T8694] ? aa_path_link+0x460/0x460 [ 68.222562][ T8694] ? find_held_lock+0x35/0x130 [ 68.227461][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.233960][ T8694] ? fsnotify_nameremove+0x300/0x300 [ 68.239308][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.245588][ T8694] ? fsnotify_first_mark+0x210/0x210 [ 68.250995][ T8694] ? security_file_permission+0x8f/0x380 [ 68.256648][ T8694] ? __mutex_init+0xef/0x130 [ 68.261332][ T8694] ? iter_file_splice_write+0xbd0/0xbd0 [ 68.267042][ T8694] do_splice_to+0x127/0x180 [ 68.271846][ T8694] splice_direct_to_actor+0x2d2/0x970 [ 68.277328][ T8694] ? generic_pipe_buf_nosteal+0x10/0x10 [ 68.282956][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.289204][ T8694] ? do_splice_to+0x180/0x180 [ 68.293939][ T8694] ? rw_verify_area+0x126/0x360 [ 68.298794][ T8694] do_splice_direct+0x1da/0x2a0 [ 68.303681][ T8694] ? splice_direct_to_actor+0x970/0x970 [ 68.309331][ T8694] ? rcu_read_lock_sched_held+0x110/0x130 [ 68.315042][ T8694] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 68.320558][ T8694] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.326796][ T8694] ? __sb_start_write+0x1ac/0x360 [ 68.331816][ T8694] do_sendfile+0x597/0xd00 [ 68.336233][ T8694] ? do_compat_pwritev64+0x1c0/0x1c0 [ 68.341511][ T8694] ? putname+0xf4/0x130 [ 68.345657][ T8694] ? do_sys_open+0x31d/0x5d0 [ 68.350337][ T8694] __x64_sys_sendfile64+0x1dd/0x220 [ 68.355817][ T8694] ? __ia32_sys_sendfile+0x230/0x230 [ 68.361189][ T8694] ? do_syscall_64+0x26/0x680 [ 68.365861][ T8694] ? lockdep_hardirqs_on+0x418/0x5d0 [ 68.371314][ T8694] ? trace_hardirqs_on+0x67/0x220 [ 68.376453][ T8694] do_syscall_64+0xfd/0x680 [ 68.380986][ T8694] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.386909][ T8694] RIP: 0033:0x442409 [ 68.390800][ T8694] Code: e8 8c b2 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 68.410528][ T8694] RSP: 002b:00007ffd293a8008 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 68.418936][ T8694] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442409 [ 68.427090][ T8694] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008 [ 68.435083][ T8694] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 68.443049][ T8694] R10: 0000000000000002 R11: 0000000000000246 R12: 000000000000001c [ 68.451256][ T8694] R13: 0000000000403210 R14: 0000000000000000 R15: 0000000000000000 [ 68.461120][ T8694] Kernel Offset: disabled [ 68.465552][ T8694] Rebooting in 86400 seconds..